Sliding clasp fastener



Jan. 9, 1951 P. MENIGE SLIDING CLASP FASTENER Filed Oct. 22, 1948 v'iirrllplllrrvilli/I'll,01111111111111I1l 1n r 'tlp.lllllllulu(l,..

4 Jun/M452: PAUL ME/VGE Arm/M 7 Patented Jan. 9, 1951 UNITED STATES PATENT OFFICE Application October 22, 1948, Serial No. 55,887 In Switzerland June 5, 1948 4 Claims. 1

The present invention relates to sliding clasp fastenings of the type having flexible stringers, e. g., woven bands which have beaded edges on which slide a series of sliding clasps connected in spaced relationship along cords or the like, the first sliding clasp of which series is adapted to serve as the operating sliding clasp for drawing the other sliding clasps apart or pushingthem together and the present invention is concerned with an improved form of such operating sliding clasp. The stringers adapt the fastening to be inserted in the opening or along the edges of an object which is to be opened and closed.

Contrary to the zip-fasteners in which edges of the stringers are provided with opposing rows of co-operating interlocking elements which are brought into engagement with or separated from one another by a sliding cam, which is self-reraining in any desired position into which it is brought, this self-retaining action is lacking in the operating sliding clasp of multi-clasp fastenings so that these suffer from the limitation that they must be kept either fully open or fully closed and additional means are required to keep the operating sliding clasp in the closed position of the fastening.

This limitation which has up to now militated against the use of multi-clasp fastenings which otherwise have great advantages, can now be regarded as overcome by the operating sliding clasp in accordance with the present invention.

The operating sliding clasp in accordance with the invention is characterized by having a channelled base for making interlocking sliding engagement with the beaded edges of the stringers and having a medial longitudinal web adapted to intrude between the beaded edges and to extend beyond the outer side of the fastening where it is provided with a pivoted flap which is adapted to swing inwards between the web and the head so as by yield and elastic reaction of the latter to set up a friction grip opposing unintentional sliding of the clasp along the beaded edges in any desired position of the clasp therealong.

To facilitate intrusion of the flap its intruding edges are rounded off.

The friction grip according to this invention does not expose the fastening to undue wear and tear.

In order to limit the movement of the flap from the open position into the closed position and to prevent the disengagement of the flap from the web, its edge lying in the direction of pull of the operating organ and its back form an acute angle with the base line.

The back of the fiap may be extended to form a plate of any desired shape which can be ornamented on the outside.

According to the purpose for which the sliding clasp fastener is required, the operating sliding clasp can be of metal, plastic, glass or other appropriate material.

In order that the present invention may be the more readily understood, reference is hereinafter made to the constructional form illustrated by way of example in the accompanying drawings, in which:

Fig. l is a longitudinal section along the line IVIV of Fig. 5 of the operating member in the the clamped position,

Fig. 2 is a longitudinal section along the line IVIV of Fig. 5, of the operating member in the freed position.

Fig. 3 is a section along line II of Fig. 1.

Fig. 4 is a plan of Fig. 2.

mg 5 is a cross section along line IIlI of Fig. 1.

Fig. 6 is a part cross section along line IIIIII of Fig. 2, and

Fig. '7 is a view from B of Fig. 5 of a multisliding clasp fastener comprising an arrestable operating organ in accordance with the present invention.

Referring to the drawing, l and l are the stringers adapted to be fitted in the opening of any desired object to be opened and closed and 2, 2 are the beaded edges of the stringers. 3 and 3' indicate lines of contact of the beaded edges 2 and 2' with the web 6 of the operating sliding clasp. 4 is the channelled base of the operating sliding clasp, the side walls 4' of Which embrace the beaded edges 2; 2'. t the trailing end of the operating sliding clasp 4 in its closing movement the walls 4 have eyes 5 by which the draw cords or the like M are fastened which join the series of slidingclasps l2 from a fixed end member !3 to the operating sliding clasp 4. 6 is a central web of the sliding clasp 4, l a pin fitted in it upon which is pivoted a flap comprising parallel walls 8 and 8 and a back 9 which is extended to form a plate, the walls 8, 8' cmbracing the web 6. At the end of the flap opposite to the fulcrum a finger tab H is fitted in a hole [0 for manipulating the operating member.

In Fig. 7 is shown diagrammatically a multisliding clasp fastening having an operating organ which can be fastened in any desired position, 0 indicating the side facing outwards and D indicating the side facing inwards.

Having now particularly described and ascer- 3 tained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. A locking slider for the beaded stringers of sliding clasp fasteners, comprising an elongated member of substantially a channel-shaped crosssection and including a longitudinal wall in its central plane, the flanges of said channel being curved towards said wall with their edges spaced therefrom so as to be adapted to receive fittingly between said wall and said flanges the beaded edges respectively of fastener stringers, said wall projecting above the edges of said flanges, and a second member pivoted to the projecting wall portion about an axis at right angles thereto, said second member including two connected side walls parallel to and adjacent both sides respectively of said central wall, and being reciprocable about said axis to enter into and to be substantially withdrawn from the spaces between thecentral wall and said flanges.

2. A slider as claimed in claim 1, said second member including a plate-like portion constituting the means for connecting said side walls, said plate-like portion being arranged above said central wall and extending laterally beyond said side-walls.

3. A slider as claimed in claim 1, said second 4 member being substantially channel-shaped, said side walls constituting the flanges of said channel and being spaced from each other according to the thickness of said central wall, said connection of said side walls constituting the web of said channel, and said second member having one end position in which the free edges of said side walls opposite said connecting web are close to the web of the channel of said first member, and a second position in which at least the major portions of said side walls are above the level of the free edges of the flanges of said first member.

4. VA slidervas claimed in claim 1 wherein the free edges of the side walls are rounded off.

PAUL MENGE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

